期刊
MOLECULAR DIVERSITY
卷 13, 期 4, 页码 439-443出版社
SPRINGER
DOI: 10.1007/s11030-009-9128-x
关键词
Thiazole; Benzothiazole; Ethyl bromopyruvate; Ethyl pyruvate; Acetylenic compound
An efficient diastereoselective synthesis of 7-ethyl 5,6-dialkyl 7H-[1,3]thiazolo[2,3-b][1,3]oxazin-5,6, 7-tricarboxylates and 2-ethyl 3,4-dialkyl 2H-[1,3]oxazino [2,3-b][1,3]benzothiazole-2,3,4-tricarboxylates via reaction of thiazole and benzothiazole with dialkyl acetylenedicarboxylates in the presence of ethyl pyruvate is described.
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